Sky-Watcher - The worlds largest telescope manufacturer. The Obsession 18" UC features the same quality craftsmanship and award winning design as found on our renown 20… Featuring a collapsible truss tube on an altazimuth dobsonian base, the Skywatcher 20″ Go-To Computerized Dobsonian Telescope is not only easy to use but excellent value. Dobsonian Telescopes. EQ8-R, EQ8-RH. The Obsession 18" UC (Ultra Compact) is the ultimate compact scope for the discriminating enthusiast who wants big aperture in a small package. 110-pound (50 kg) Payload; Belt-drive on Both Axes Coupled with a … The construction will be … EQ8-R EQ8-RH. There are no short cuts in construction or performance. Skywatcher, it would appear, are to introduce two new dobsonian models in the Autumn. An 18" and 20" truss dobsonian that is currently in a prototype stage. A Dobsonian telescope is a Newtonian reflector mounted on a simple yet stable alt-azimuth (lazy Susan style) mount. Sky-Watcher Flextube 250 Dobsonian 10-inch Collapsible Large Aperture Telescope – Portable, Easy to Use, Perfect for Beginners, White/Black (S11720) 4.0 out of 5 stars 55 2 offers from $1,006.49 These telescopes are named for their designer, John Dobson, …